Adventurers will gain stress as they embark on the mission or from enemy attacks, and if failing a resolve check, they will cross the horizon with varying degrees of insanity.

Despair Event Horizon: An Enforced Trope.

Death Seeker: Masochistic, Hopeless, and some Fearful heroes will sometimes beg for the enemy to kill them, and a good number of the characters display this trope in their personalities.

Dark and Troubled Past: All of the characters, either in their backstory comics or when chatting, will show that none of them had entirely happy lives before arriving at the Hamlet, with some having nothing left to live for.

Especially notable in the case of the Grave Robber and Musketeer, whose barks verge on Hemo Erotic.

Blood Lust: Should one of them become Masochistic.

Badass Normal: A good number of the classes have jobs not suited for combat (such as the Jester or Antiquarian), and very few provide any supernatural abilities and attacks, but they can fight against the horrors lurking in the dungeons just the same as anybody else.

Every single character is a badass in one way or another.

Badass Boast: Heroes tend to make a snappy one-liner when landing a critical hit on an enemy or when Virtuous, and some will even make boasts while Masochistic.

However, exposure to stress and afflictions put them squarely in the Nominal side as they become abusive, insane, or both.

Anti-Hero: The entire hamlet of heroes are at best Classical anti-heroes like the Crusader, Houndmaster or Vestal to Unscrupulous types like the Bounty Hunter, Flagellant or Jester.

Notably, the Vestal, Plague Doctor, Grave Robber, and Arbalest will plead for their lives if you scroll over them for Come Unto Your Maker.

Ain't Too Proud to Beg: No matter how composed a class may be, they will start suggesting they run when taking stress damage or watching an enemy land a critical hit on an ally.

This is justified in the dungeons themselves, since the dangers the heroes face can come at any time. The comics largely avert this and shows what most of the armored heroes look like underneath.

24-Hour Armor: With few exceptions, none of the classes are ever seen taking off their armor or helmet/mask, no matter what they're currently doing.

Darkest dungeon musketeer